Title: wp_get_split_terms
Published: April 23, 2015
Last modified: February 24, 2026

---

# wp_get_split_terms( int $old_term_id ): array

## In this article

 * [Parameters](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#wp--skip-link--target)

Gets data about terms that previously shared a single term_id, but have since been
split.

## 󠀁[Parameters](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#parameters)󠁿

 `$old_term_id`intrequired

Term ID. This is the old, pre-split term ID.

## 󠀁[Return](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#return)󠁿

 array Array of new term IDs, keyed by taxonomy.

## 󠀁[Source](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#source)󠁿

    ```php
    function wp_get_split_terms( $old_term_id ) {
    	$split_terms = get_option( '_split_terms', array() );

    	$terms = array();
    	if ( isset( $split_terms[ $old_term_id ] ) ) {
    		$terms = $split_terms[ $old_term_id ];
    	}

    	return $terms;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/taxonomy.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/taxonomy.php#L4596)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/taxonomy.php#L4596-L4605)

## 󠀁[Related](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#related)󠁿

| Uses | Description | 
| [get_option()](https://developer.wordpress.org/reference/functions/get_option/)`wp-includes/option.php` |

Retrieves an option value based on an option name.

  |

| Used by | Description | 
| [wp_get_split_term()](https://developer.wordpress.org/reference/functions/wp_get_split_term/)`wp-includes/taxonomy.php` |

Gets the new term ID corresponding to a previously split term.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/functions/wp_get_split_terms/?output_format=md#changelog)󠁿

| Version | Description | 
| [4.2.0](https://developer.wordpress.org/reference/since/4.2.0/) | Introduced. |

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